Selective deposition of metal oxide by pulsed chemical vapor deposition

ABSTRACT

Embodiments described and discussed herein provide methods for selectively depositing a metal oxides on a substrate. In one or more embodiments, methods for forming a metal oxide material includes positioning a substrate within a processing chamber, where the substrate has passivated and non-passivated surfaces, exposing the substrate to a first metal alkoxide precursor to selectively deposit a first metal oxide layer on or over the non-passivated surface, and exposing the substrate to a second metal alkoxide precursor to selectively deposit a second metal oxide layer on the first metal oxide layer. The method also includes sequentially repeating exposing the substrate to the first and second metal alkoxide precursors to produce a laminate film containing alternating layers of the first and second metal oxide layers. Each of the first and second metal alkoxide precursors contain different types of metals which are selected from titanium, zirconium, hafnium, aluminum, or lanthanum.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims benefit to U.S. Appl. No. 63/007,124, filed onApr. 8, 2020, which is herein incorporated by reference.

BACKGROUND Field

Embodiments of the present disclosure generally relate to depositionprocesses, and in particular to vapor deposition processes for metaloxides.

Description of the Related Art

Reliably producing sub-half micron and smaller features is one of thekey technology challenges for next generation very large scaleintegration (VLSI) and ultra large-scale integration (ULSI) ofsemiconductor devices. However, as the limits of circuit technology arepushed, the shrinking dimensions of VLSI and ULSI technology have placedadditional demands on processing capabilities. Reliable formation ofgate structures on the substrate is important to VLSI and ULSI successand to the continued effort to increase circuit density and quality ofindividual substrates and die.

As the geometry limits of the structures used to form semiconductordevices are pushed against technology limits, the need for accurateformation with desired materials for the manufacture of structureshaving small critical dimensions and high aspect ratios and structureswith certain desired materials has become increasingly difficult tosatisfy. The conventional selective deposition process often cannotefficiently be confined to designated small areas of the substrate,resulting in undesired materials being formed on undesired locations ofthe substrate. Thus, deposited materials are generally globally formedacross the entire surface of the substrate without selectivity or bedeposited on undesired locations of the substrate, thus making theselective deposition processes difficult to achieve and often resultingin cross contamination on the substrate surface.

Therefore, there is a need for improved methods for selectivelydepositing metal oxides.

SUMMARY

Embodiments described and discussed herein provide methods fordepositing a metal oxide material, such a laminate film containingalternating layers of two or more types of metal oxide layers. The metaloxide material is amorphous since the alloying of the two or more typesof metal oxides prevents crystallization of the overall material.

In one or more embodiments, a method of forming a metal oxide materialincludes positioning a substrate within a processing chamber, where thesubstrate has one or more passivated surfaces and one or morenon-passivated surfaces, exposing the substrate to a first metalalkoxide precursor to produce a first metal oxide layer on or over thenon-passivated surface while the passivated surface remains at leastsubstantially free of the first metal oxide layer. The first metalalkoxide precursor is thermally decomposed to produce the first metaloxide layer. The method also includes exposing the substrate to a secondmetal alkoxide precursor to produce a second metal oxide layer on thefirst metal oxide layer while the passivated surface remains at leastsubstantially free of the second metal oxide layer. The second metalalkoxide precursor is thermally decomposed to produce the second metaloxide layer. The method further includes sequentially repeating exposingthe substrate to the first metal alkoxide precursor and the second metalalkoxide precursor to produce a laminate film containing alternatinglayers of the first and second metal oxide layers. Each of the firstmetal alkoxide precursor and the second metal alkoxide precursor havedifferent metals which are selected from titanium, zirconium, hafnium,aluminum, or lanthanum.

In other embodiments, a method of forming a metal oxide materialincludes positioning a substrate within a processing chamber, where thesubstrate has one or more passivated surfaces and one or morenon-passivated surfaces and depositing or otherwise forming a laminatefilm selectively on the non-passivated surface while the passivatedsurface remains at least substantially free of the laminate film. Thelaminate film contains two or more pairs of alternating layers of afirst metal oxide layer and a second metal oxide layer. A first metalalkoxide precursor is thermally decomposed to produce the first metaloxide layer during a first pulsed-chemical vapor deposition process.Similarly, a second metal alkoxide precursor is thermally decomposed toproduce the second metal oxide layer during a second pulsed-chemicalvapor deposition process.

In some embodiments, a method of forming a metal oxide material includespositioning a substrate within a processing chamber, where the substratehas one or more passivated surfaces and one or more non-passivatedsurfaces, and exposing the substrate to a first metal alkoxide precursorto produce a first metal oxide layer on or over the non-passivatedsurface while the passivated surface remains at least substantially freeof the first metal oxide layer, where the first metal alkoxide precursoris thermally decomposed to produce the first metal oxide layer while thesubstrate is maintained at a first temperature of about 150° C. to about350° C. The method also includes exposing the substrate to a secondmetal alkoxide precursor to produce a second metal oxide layer on thefirst metal oxide layer while the passivated surface remains at leastsubstantially free of the second metal oxide layer, where the secondmetal alkoxide precursor is thermally decomposed to produce the secondmetal oxide layer while the substrate is maintained at a secondtemperature of about 150° C. to about 350° C. Each of the first metaloxide layer and the second metal oxide layer have different metal oxideswhich are selected from titanium oxide, zirconium oxide, hafnium oxide,aluminum oxide, dopants thereof, or lanthanum oxide. The method alsoincludes sequentially repeating exposing the substrate to the firstmetal alkoxide precursor and the second metal alkoxide precursor toproduce a laminate film containing alternating layers of the first andsecond metal oxide layers, wherein the laminate film is amorphous, andwhere the laminate film contains about 10 pairs to about 100 pairs ofthe first and second metal oxide layers.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the manner in which the above recited features of the presentdisclosure can be understood in detail, a more particular description ofthe disclosure, briefly summarized above, may be had by reference toembodiments, some of which are illustrated in the appended drawings. Itis to be noted, however, that the appended drawings illustrate onlytypical embodiments of this disclosure and are therefore not to beconsidered limiting of its scope, for the disclosure may admit to otherequally effective embodiments.

FIG. 1 is a flow chart of a process for producing a laminate filmcontaining a metal oxide material on a substrate, according to one ormore embodiments described and discussed herein.

FIG. 2 depicts a cross-sectional view of a laminate film, according toone or more embodiments described and discussed herein.

To facilitate understanding, identical reference numerals have beenused, where possible, to designate identical elements that are common tothe Figures. It is contemplated that elements and features of oneembodiment may be beneficially incorporated in other embodiments withoutfurther recitation.

It is to be noted, however, that the appended drawings illustrate onlyexemplary embodiments of this disclosure and are therefore not to beconsidered limiting of its scope, for the disclosure may admit to otherequally effective embodiments.

DETAILED DESCRIPTION

In one or more embodiments, a method for forming a metal oxide material,such as selectively depositing a laminate film of metal oxides, isprovided. Two or more metal alkoxide precursors are used duringpulsed-chemical vapor deposition (CVD) processes to form the laminatefilm on a substrate. The laminate film contains alternating layers oftwo different metal oxides with different types of metals, such as afirst metal oxide layer and a second metal oxide layer. Each of themetal oxide layers can independently be or include titanium oxide,zirconium oxide, hafnium oxide, aluminum oxide, lanthanum oxide, dopantsthereof, or any combination thereof. It is believed that the alloying ofthe two or more different metal oxide layers prevents crystallization,and as such, provides the metal oxide material to be non-crystalline oramorphous.

FIG. 1 is a flow chart of a process 100 which can be used to selectivelydeposit laminate films containing metal oxide materials on a substrateor other surface. FIG. 2 depicts a cross-sectional view of a workpiece200 containing a laminate film 220 disposed on a substrate 202. Thelaminate film 220 is one example of different types of laminate filmswhich can be produced by the process 100. The laminate film 220 andsimilar structures and devices can be or include a back-end structure ordevice, front-end structure or device, interconnection structure ordevice, passivation structure or device, a fin structure, a gatestructure or device, a contact structure, or any suitable structure ordevice used in microelectronics, such as semiconductor devices, displaydevices, photovoltaic devices, battery or energy storage devices, andother devices.

The process 100 includes operations 110-190, as shown in FIG. 1. Atoperation 110, one or more substrates can be placed or otherwisepositioned within a processing chamber. The processing chamber can be orinclude a CVD chamber, a pulsed-CVD chamber, a plasma-enhanced CVD(PE-CVD) chamber, an atomic layer deposition (ALD) chamber, aplasma-enhanced ALD (PE-ALD) chamber, a thermal anneal chamber, as wellas other types of chambers. In one or more examples, the process 100 isperformed in a thermal, pulsed-CVD chamber or a thermal, ALD chamber,such as the Trillium® chamber, commercially available from AppliedMaterials, Inc.

The substrate 202 contains one or more non-passivated materials orsurfaces 204 and one or more passivated materials or surfaces 206. Themetal oxide materials of the laminate film 220 are selectively depositedon one type of surface over another type surface. More specifically, thelaminate film 220 is selectively deposited or otherwise formed on thenon-passivated surface 204 while the passivated surface 206 remainscompletely free or substantially free of the metal oxide materialforming the laminate film 220.

The non-passivated surfaces 204 can be a hydrogen-terminated surface(—H) and/or a hydroxyl-terminated surface (—OH) of a silicon substrateor a silicon-containing material, a silicon oxide substrate or a siliconoxide containing material, a metal (e.g., copper, tungsten, cobalt,aluminum, alloys thereof) or contact material, or variations thereof. Inone or more examples, the non-passivated surface 204 is ahydrogen-terminated silicon surface where the underlying layer is asilicon substrate or a silicon-containing material. In other examples,the non-passivated surface 204 is a hydroxyl-terminated silicon oxidesurface where the underlying layer is a silicon oxide substrate or asilicon oxide containing material.

The passivated surfaces 206 can be an alkyl-terminated surface and canbe terminated with one or more alkyl groups, such as such as a methylgroup (—CH₃), an ethyl group (—CH₂CH₃), a propyl group (—CH₂CH₂CH₃), abutyl group (—CH₂ CH₂CH₂CH₃), other alkyl groups, or any combinationthereof. In one or more examples, the passivated surface 206 is amethyl-terminated surface where the underlying layer and/or substrate isor contains a carbon-doped silicon oxide (SiCOH) material, for example,a Black Diamond® material, commercially available from AppliedMaterials, Inc.

In one or more embodiments, the passivated surface 206 is or containsone or more dielectric materials, such as silicon oxide, doped siliconmaterials, or low-k materials, such as carbon containing materials.Suitable carbon containing materials can be or include amorphous carbon,silicon carbide, carbon-doped silicon oxide materials, or combinationsthereof. Exemplary low-k insulating dielectric materials can be orinclude silicon oxide materials, silicon nitride materials, carbon-dopedsilicon oxide materials, silicon carbide materials, carbon basedmaterials, or any combination thereof.

In one or more examples, the non-passivated surface 204 is terminatedwith hydride groups, hydroxide groups, or a combination thereof, and thepassivated surface 206 is terminated with one or more alkyl groups.

The substrate 202 can be or include materials selected from crystallinesilicon (e.g., Si<100> or Si<111>), silicon oxide, strained silicon,silicon germanium, doped or undoped polysilicon, doped or undopedsilicon wafers and patterned or non-patterned wafers silicon oninsulator (SOI), carbon doped silicon oxides, silicon nitride, dopedsilicon, germanium, gallium arsenide, glass, sapphire. The substrate 202can have various dimensions, such as 200 mm, 300 mm, 450 mm or otherdiameter, as well as, being a rectangular or square panel. Unlessotherwise noted, embodiments and examples described herein are conductedon substrates with a 200 mm diameter, a 300 mm diameter, or a 450 mmdiameter substrate. In the embodiment wherein a SOI structure isutilized for the substrate 202, the substrate 202 can include a burieddielectric layer disposed on a silicon crystalline substrate. In theembodiment depicted herein, the substrate 202 can be a crystallinesilicon substrate. Moreover, the substrate 202 is not limited to anyparticular size or shape. The substrate 202 can be a circular,polygonal, square, rectangular, curved or otherwise non-circularworkpiece, such as a polygonal glass substrate used in the fabricationof flat panel displays.

At operation 120, the workpiece 200 and/or the substrate 202 is exposedto a first metal alkoxide precursor to produce a first metal oxide layer210 on or over the non-passivated surface 204 while the passivatedsurface 206 remains at least substantially free if not completely freeof the first metal oxide layer 210. The metal of the first metalalkoxide precursor is selected from titanium, zirconium, hafnium,aluminum, or lanthanum, such that the deposited metal oxide contained inthe first metal oxide layer 210 is selected from titanium oxide,zirconium oxide, hafnium oxide, aluminum oxide, lanthanum oxide, ordopants thereof.

At operation 130, the workpiece 200 and/or the substrate 202 containingthe first metal oxide layer 210 is exposed to a first purge gas. Thefirst purge gas removes byproducts, excess precursor, and otherundesired agents or contaminants. The first purge gas can be or includenitrogen (N₂), argon, helium, or any combination thereof. The purge gascan have a flow rate of about 500 sccm to about 4,000 sccm, such asabout 500 sccm to about 1,000 sccm.

At operations 120 and 130, the first metal alkoxide precursor isthermally decomposed to produce the first metal oxide layer 210 duringthe first pulsed-CVD process. The substrate 202 is heated and/ormaintained at a temperature of about 150° C. to about 450° C., such asabout 200° C. to about 350° C., about 150° C. to about 350° C., or about250° C. to about 300° C. during operations 120 and 130. The interiorvolume or process region of the CVD or other processing chamber can bemaintained at a pressure of about 10 mTorr to about 10 Torr, such asabout 100 mTorr to about 500 mTorr during the first pulsed-CVD process.

The cycle of exposing the workpiece 200 and/or the substrate 202 to thefirst metal alkoxide precursor and the first purge gas can be performedone time or multiple times, such as 2, 3, 5, about 10, about 15, about20, about 25, about 30, about 40, about 50, about 65, about 80, about100 times, or more. The workpiece 200 and/or the substrate 202 issequentially exposed to the first metal alkoxide precursor and the firstpurge gas during the first pulsed-CVD process.

In one or more examples, the workpiece 200 and/or the substrate 202 isexposed to the first metal alkoxide precursor for a period of about 0.1seconds to about 10 seconds and then exposed to the first purge gas fora period of about 1 second to about 120 seconds. In other examples, theworkpiece 200 and/or the substrate 202 is exposed to the first metalalkoxide precursor for a period of about 0.1 seconds to about 2 secondsand then exposed to the first purge for a period of about 1 second toabout 30 seconds.

At operation 140, if the desired thickness of the first metal oxidelayer 210 is deposited or otherwise achieved, then the process 100advances to operation 150. If the desired thickness of the first metaloxide layer 210 is not deposited or otherwise achieved, then operations120 and 130 are repeated until the desired thickness of the first metaloxide layer 210 is achieved. The first metal oxide layer 210 can have athickness of about 0.05 nm to about 10 nm, such as about 0.1 nm to about5 nm or about 0.15 nm to about 1.2 nm.

At operation 150, the workpiece 200 and/or the substrate 202 is exposedto a second metal alkoxide precursor to produce a second metal oxidelayer 212 on the first metal oxide layer 210 while the passivatedsurface 206 remains at least substantially free if not completely freeof the second metal oxide layer 212. The metal of the second metalalkoxide precursor is selected from titanium, zirconium, hafnium,aluminum, or lanthanum, such that the deposited metal oxide contained inthe second metal oxide layer 212 has a different metal than the metalselected for the first metal oxide layer 210. As such, the second metaloxide layer 212 contains titanium oxide, zirconium oxide, hafnium oxide,aluminum oxide, lanthanum oxide, or dopants thereof. As such, since themetal in the first metal oxide layer 210 is different than the metal inthe second metal oxide layer 212, the laminate film 220 is maintainedamorphous or non-crystalline.

In operations 120 and 150, at least the first metal alkoxide precursorand/or the second metal alkoxide precursor is thermally decomposed byβ-hydride elimination process. The first metal alkoxide precursor andthe second metal alkoxide precursor are thermally decomposed to producethe first and second metal oxide layers, respectively, in the absence ofa co-reactant. In typical CVD or ALD processes, an oxidizing agent isused with a metal precursor to form a metal oxide. However, thedeposition processes described and discussed herein rely on thermaldecomposition and usually β-hydride elimination to produce the metaloxides. The metal oxide precursor is both the metal source and theoxygen source. As such, the thermal decomposition of the metal alkoxideprecursor is a single source of both the metal and the oxygen for themetal oxide layer. In one or more examples, there is not a co-reactant,such as an oxidizing agent, which is independent of the metal alkoxideprecursor during the pulsed-CVD process. In other examples, one or moreoxidizing agents (e.g., water, oxygen (O₂), ozone, hydrogen peroxide, analcohol) can be used along with the metal alkoxide precursor to producethe metal oxide layer during the pulsed-CVD process.

In one or more embodiments, each of the first metal alkoxide precursorand the second metal alkoxide precursor independently is or contains oneor more metal propoxide compounds (e.g., metal iso-propoxide compounds)and/or one or more metal butoxide compounds (e.g., metal tert-butoxidecompounds). As discussed above, the metal of the first metal alkoxideprecursor is different than the metal of the second metal alkoxideprecursor. In one or more examples, each of the first metal alkoxideprecursor and the second metal alkoxide precursor independently is orcontains titanium (IV) n-propoxide, titanium (IV) iso-propoxide,titanium (IV) n-butoxide, titanium (IV) tert-butoxide, hafnium (IV)n-propoxide, hafnium (IV) iso-propoxide, hafnium (IV) n-butoxide,hafnium (IV) tert-butoxide, zirconium (IV) n-propoxide, zirconium (IV)iso-propoxide, zirconium (IV) n-butoxide, zirconium (IV) tert-butoxide,aluminum (III) n-propoxide, aluminum (III) iso-propoxide, aluminum (III)n-butoxide, aluminum (III) tert-butoxide, lanthanum (III) n-propoxide,lanthanum (III) iso-propoxide, lanthanum (III) n-butoxide, lanthanum(III) tert-butoxide, isomers thereof, or any combination thereof. Othertypes of metal alkoxide precursors can be used in the processesdescribed and discussed herein.

At operation 160, the workpiece 200 and/or the substrate 202 containingthe second metal oxide layer 212 is exposed to a second purge gas. Thesecond purge gas removes byproducts, excess precursor, and otherundesired agents or contaminants. The second purge gas can be or includenitrogen (N₂), argon, helium, or any combination thereof. The purge gascan have a flow rate of about 500 sccm to about 4,000 sccm, such asabout 500 sccm to about 1,000 sccm.

At operations 150 and 160, the second metal alkoxide precursor isthermally decomposed to produce the second metal oxide layer 212 duringthe second pulsed-CVD process. The substrate 202 is heated and/ormaintained at a temperature of about 150° C. to about 450° C., such asabout 200° C. to about 350° C., about 150° C. to about 350° C., or about250° C. to about 300° C. during operations 150 and 160. The interiorvolume or process region of the CVD or other processing chamber can bemaintained at a pressure of about 10 mTorr to about 10 Torr, such asabout 100 mTorr to about 500 mTorr during the second pulsed-CVD process.

The cycle of exposing the workpiece 200 and/or the substrate 202 to thesecond metal alkoxide precursor and the second purge gas can beperformed one time or multiple times, such as 2, 3, 5, about 10, about15, about 20, about 25, about 30, about 40, about 50, about 65, about80, about 100 times, or more. The workpiece 200 and/or the substrate 202is sequentially exposed to the second metal alkoxide precursor and thesecond purge gas during the second pulsed-CVD process.

In one or more examples, the workpiece 200 and/or the substrate 202 isexposed to the second metal alkoxide precursor for a period of about 0.1seconds to about 10 seconds and then exposed to the second purge gas fora period of about 1 second to about 150 seconds. In other examples, theworkpiece 200 and/or the substrate 202 is exposed to the second metalalkoxide precursor for a period of about 0.1 seconds to about 2 secondsand then exposed to the second purge for a period of about 1 second toabout 30 seconds.

At operation 170, if the desired thickness of the second metal oxidelayer 212 is deposited or otherwise achieved, then the process 100advances to operation 180. If the desired thickness of the second metaloxide layer 212 is not deposited or otherwise achieved, then operations150 and 160 are repeated until the desired thickness of the second metaloxide layer 212 is achieved. The second metal oxide layer 212 can have athickness of about 0.05 nm to about 10 nm, such as about 0.1 nm to about5 nm or about 0.15 nm to about 1.2 nm.

At operation 180, if the desired thickness of the laminate film 220 isdeposited, formed, or otherwise achieved, then the process 100 advancesto operation 190 in which the process 100 is complete. If the desiredthickness of the laminate film 220 is not deposited, formed, orotherwise achieved, then operations 120-170 are repeated until thedesired thickness of the laminate film 220 is achieved. For example, theprocess 100 includes sequentially repeating exposing the workpiece 200and/or the substrate 202 to the first metal alkoxide precursor and thefirst purge gas in operations 120 and 130 and the second metal alkoxideprecursor and the second purge gas in operations 150 and 160 to producea laminate film 220 containing alternating layers of the first andsecond metal oxide layers 210, 212. When operation 120 is repeated afteroperation 180, the first metal oxide layer 210 is deposited on thesecond metal oxide layer 212 instead of the non-passivated surface 204.

Operations 120-170 are repeated until the laminate film 220 has athickness of about 2 nm to about 100 nm, about 5 nm to about 50 nm,about 10 nm to about 35 nm, or about 15 nm to about 25 nm.Alternatively, operations 120-170 are repeated until the desired numberof pairs of the first and second metal oxide layers 210, 212 isachieved. The laminate film 220 contains about 2 pairs, about 5 pairs,about 10 pairs, about 20 pairs, or about 30 pairs to about 40 pairs,about 50 pairs, about 80 pairs, about 100 pairs, about 150 pairs, about200 pairs or more pairs of the first and second metal oxide layers 210,212. In some examples, the laminate film 220 contains about 10 pairs toabout 100 pairs of the first and second metal oxide layers 210, 212. Inother examples, the laminate film 220 contains about 10 pairs to about50 pairs or about 20 pairs to about 40 pairs of the first and secondmetal oxide layers 210, 212.

In one or more embodiments, the first metal oxide layer 210 contains afirst metal and the second metal oxide layer 212 contains a secondmetal, which is different than the first metal. The laminate film 220has an atomic ratio of the first metal to the second metal of about 5:1to about 15:1, about 6:1 to about 12:1, or about 7:1 to about 10:1. Inone or more examples of the laminate film 220, the first metal oxidelayer 210 contains titanium oxide and the second metal oxide layer 212contains hafnium oxide. The atomic ratio of titanium to hafnium is about5:1 to about 15:1, about 6:1 to about 12:1, or about 7:1 to about 10:1for the laminate film 220.

In one or more examples, the first metal oxide layer 210 containingtitanium oxide has a thickness of about 0.5 nm to about 2 nm and thesecond metal oxide layer 212 containing hafnium oxide has a thickness ofabout 0.08 nm to about 0.5 nm. In some examples, the first metal oxidelayer 210 containing titanium oxide has a thickness of about 0.8 nm toabout 1.5 nm and the second metal oxide layer 212 containing hafniumoxide has a thickness of about 0.1 nm to about 0.3 nm. In otherexamples, the first metal oxide layer 210 containing titanium oxide hasa thickness of about 1 nm to about 1.2 nm, such as 1.14 nm and thesecond metal oxide layer 212 containing hafnium oxide has a thickness ofabout 0.12 nm to about 0.2 nm, such as 0.16 nm.

Thus, a selective deposition process is provided to form a metal oxidematerials on different surfaces, e.g., different portions, of asubstrate by a selective CVD process. Thus, a structure with desireddifferent type of materials formed on different locations of thesubstrate may be obtained.

Embodiments of the present disclosure further relate to any one or moreof the following paragraphs 1-33:

1. A method of forming a metal oxide material, comprising: positioning asubstrate within a processing chamber, wherein the substrate comprises apassivated surface and a non-passivated surface; exposing the substrateto a first metal alkoxide precursor to produce a first metal oxide layeron or over the non-passivated surface while the passivated surfaceremains at least substantially free of the first metal oxide layer,wherein the first metal alkoxide precursor is thermally decomposed toproduce the first metal oxide layer; exposing the substrate to a secondmetal alkoxide precursor to produce a second metal oxide layer on thefirst metal oxide layer while the passivated surface remains at leastsubstantially free of the second metal oxide layer, wherein the secondmetal alkoxide precursor is thermally decomposed to produce the secondmetal oxide layer; and sequentially repeating exposing the substrate tothe first metal alkoxide precursor and the second metal alkoxideprecursor to produce a laminate film comprising alternating layers ofthe first and second metal oxide layers, wherein the first metalalkoxide precursor and the second metal alkoxide precursor independentlycomprises a metal selected from the group consisting of titanium,zirconium, hafnium, aluminum, and lanthanum, and wherein the first metalalkoxide precursor and the second metal alkoxide precursor havedifferent metals.

2. A method of forming a metal oxide material, comprising: positioning asubstrate within a processing chamber, wherein the substrate comprises apassivated surface and a non-passivated surface; and depositing alaminate film selectively on the non-passivated surface while thepassivated surface remains at least substantially free of the laminatefilm, wherein: the laminate film comprises two or more pairs ofalternating layers of a first metal oxide layer and a second metal oxidelayer, a first metal alkoxide precursor is thermally decomposed toproduce the first metal oxide layer during a first pulsed-chemical vapordeposition process, a second metal alkoxide precursor is thermallydecomposed to produce the second metal oxide layer during a secondpulsed-chemical vapor deposition process, the first metal alkoxideprecursor and the second metal alkoxide precursor independentlycomprises a metal selected from the group consisting of titanium,zirconium, hafnium, aluminum, and lanthanum, and the first metalalkoxide precursor and the second metal alkoxide precursor havedifferent metals.

3. A method of forming a metal oxide material, comprising: positioning asubstrate within a processing chamber, wherein the substrate comprises apassivated surface and a non-passivated surface; exposing the substrateto a first metal alkoxide precursor to produce a first metal oxide layeron or over the non-passivated surface while the passivated surfaceremains at least substantially free of the first metal oxide layer,wherein the first metal alkoxide precursor is thermally decomposed toproduce the first metal oxide layer while the substrate is maintained ata first temperature of about 150° C. to about 350° C.; exposing thesubstrate to a second metal alkoxide precursor to produce a second metaloxide layer on the first metal oxide layer while the passivated surfaceremains at least substantially free of the second metal oxide layer,wherein the second metal alkoxide precursor is thermally decomposed toproduce the second metal oxide layer while the substrate is maintainedat a second temperature of about 150° C. to about 350° C.; andsequentially repeating exposing the substrate to the first metalalkoxide precursor and the second metal alkoxide precursor to produce alaminate film comprising alternating layers of the first and secondmetal oxide layers, wherein the laminate film is amorphous, and whereinthe laminate film comprises about 10 pairs to about 100 pairs of thefirst and second metal oxide layers, wherein the first metal oxide layerand the second metal oxide layer independently comprises a metal oxideselected from the group consisting of titanium oxide, zirconium oxide,hafnium oxide, aluminum oxide, lanthanum oxide, and dopants thereof, andwherein the first metal oxide layer and the second metal oxide layercontain different metal oxides.

4. The method according to any one of paragraphs 1-3, wherein thesubstrate is maintained at a first temperature during the firstpulsed-chemical vapor deposition process and at a second temperatureduring the second pulsed-chemical vapor deposition process, and whereineach of the first temperature and the second temperature isindependently at about 150° C. to about 450° C.

5. The method according to any one of paragraphs 1-4, wherein each ofthe first temperature and the second temperature is independently atabout 200° C. to about 350° C.

6. The method according to any one of paragraphs 1-5, wherein each ofthe first metal oxide layer and the second metal oxide layerindependently has a thickness of about 0.1 nm to about 5 nm, and whereinthe laminate film comprises about 10 pairs to about 50 pairs of thefirst and second metal oxide layers.

7. The method according to any one of paragraphs 1-6, wherein thesubstrate is maintained at a temperature of about 150° C. to about 450°C. when producing the first metal oxide layer and/or the second metaloxide layer.

8. The method according to any one of paragraphs 1-7, wherein thesubstrate is maintained at a temperature of about 200° C. to about 350°C.

9. The method according to any one of paragraphs 1-8, wherein thesubstrate is maintained at a temperature of about 250° C. to about 300°C.

10. The method according to any one of paragraphs 1-9, wherein thelaminate film is amorphous.

11. The method according to any one of paragraphs 1-10, wherein each ofthe first metal oxide layer and the second metal oxide layerindependently has a thickness of about 0.1 nm to about 5 nm.

12. The method according to any one of paragraphs 1-11, wherein each ofthe first metal oxide layer and the second metal oxide layerindependently has a thickness of about 0.15 nm to about 1.2 nm.

13. The method according to any one of paragraphs 1-12, wherein thelaminate film comprises about 10 pairs to about 50 pairs of the firstand second metal oxide layers.

14. The method according to any one of paragraphs 1-13, wherein thelaminate film comprises about 20 pairs to about 40 pairs.

15. The method according to any one of paragraphs 1-14, wherein thelaminate film has a thickness of about 5 nm to about 50 nm.

16. The method according to any one of paragraphs 1-15, wherein thelaminate film has a thickness of about 10 nm to about 35 nm.

17. The method according to any one of paragraphs 1-16, wherein thelaminate film has a thickness of about 15 nm to about 25 nm.

18. The method according to any one of paragraphs 1-17, wherein thefirst metal oxide layer is produced during a first pulsed-chemical vapordeposition process, wherein the substrate is sequentially exposed to thefirst metal alkoxide precursor and a first purge gas during the firstpulsed-chemical vapor deposition process, and wherein the substrate isexposed to the first metal alkoxide precursor for a period of about 0.1seconds to about 10 seconds and exposed to the first purge gas for aperiod of about 1 second to about 120 seconds.

19. The method according to any one of paragraphs 1-18, wherein thefirst metal oxide layer is produced during a first pulsed-chemical vapordeposition process, wherein the substrate is sequentially exposed to thefirst metal alkoxide precursor and a first purge gas during the firstpulsed-chemical vapor deposition process, and wherein the substrate isexposed to the first metal alkoxide precursor for a period of about 0.1seconds to about 2 seconds and exposed to the first purge for a periodof about 1 second to about 30 seconds.

20. The method according to any one of paragraphs 1-19, wherein thefirst purge gas can be or include nitrogen (N₂), argon, helium, orcombinations thereof.

21. The method according to any one of paragraphs 1-20, wherein thesecond metal oxide layer is produced during a second pulsed-chemicalvapor deposition process, wherein the substrate is sequentially exposedto the second metal alkoxide precursor and a second purge gas during thesecond pulsed-chemical vapor deposition process, and wherein thesubstrate is exposed to the second metal alkoxide precursor for a periodof about 0.1 seconds to about 10 seconds and exposed to the second purgegas for a period of about 1 second to about 120 seconds.

22. The method according to any one of paragraphs 1-21, wherein thesecond metal oxide layer is produced during a second pulsed-chemicalvapor deposition process, wherein the substrate is sequentially exposedto the second metal alkoxide precursor and a second purge gas during thesecond pulsed-chemical vapor deposition process, and wherein thesubstrate is exposed to the second metal alkoxide precursor for a periodof about 0.1 seconds to about 2 seconds and exposed to the second purgefor a period of about 1 second to about 30 seconds.

23. The method according to any one of paragraphs 1-22, wherein thesecond purge gas can be or include nitrogen (N₂), argon, helium, orcombinations thereof.

24. The method according to any one of paragraphs 1-23, wherein thefirst metal alkoxide precursor and the second metal alkoxide precursorindependently comprises a metal propoxide compound or a metal butoxidecompound.

25. The method according to any one of paragraphs 1-24, wherein thefirst metal alkoxide precursor and the second metal alkoxide precursorindependently comprises a metal iso-propoxide compound or a metaltert-butoxide compound.

26. The method according to any one of paragraphs 1-25, wherein thefirst metal alkoxide precursor and the second metal alkoxide precursorindependently comprises titanium (IV) n-propoxide, titanium (IV)iso-propoxide, titanium (IV) n-butoxide, titanium (IV) tert-butoxide,hafnium (IV) n-propoxide, hafnium (IV) iso-propoxide, hafnium (IV)n-butoxide, hafnium (IV) tert-butoxide, zirconium (IV) n-propoxide,zirconium (IV) iso-propoxide, zirconium (IV) n-butoxide, zirconium (IV)tert-butoxide, aluminum (III) n-propoxide, aluminum (III) iso-propoxide,aluminum (III) n-butoxide, aluminum (III) tert-butoxide, lanthanum (III)n-propoxide, lanthanum (III) iso-propoxide, lanthanum (III) n-butoxide,lanthanum (III) tert-butoxide, isomers thereof, or any combinationthereof.

27. The method according to any one of paragraphs 1-26, wherein thefirst metal oxide layer comprises titanium oxide and the second metaloxide layer comprises hafnium oxide.

28. The method according to any one of paragraphs 1-27, wherein thefirst metal oxide layer comprises a first metal and the second metaloxide layer comprises a second metal, and wherein the laminate film hasan atomic ratio of the first metal to the second metal of about 5:1 toabout 15:1.

29. The method according to any one of paragraphs 1-28, wherein thefirst metal oxide layer comprises a first metal and the second metaloxide layer comprises a second metal, and wherein the laminate film hasan atomic ratio of the first metal to the second metal of about 6:1 toabout 12:1.

30. The method according to any one of paragraphs 1-29, wherein thefirst metal oxide layer comprises a first metal and the second metaloxide layer comprises a second metal, and wherein the laminate film hasan atomic ratio of the first metal to the second metal of about 7:1 toabout 10:1.

31. The method according to any one of paragraphs 1-30, wherein thenon-passivated surface is terminated with hydride groups, hydroxidegroups, or a combination thereof, and wherein the passivated surface isterminated with one or more alkyl groups.

32. The method according to any one of paragraphs 1-31, wherein at leastthe first metal alkoxide precursor or the second metal alkoxideprecursor is thermally decomposed by β-hydride elimination process.

33. The method according to any one of paragraphs 1-32, wherein at leastthe first metal alkoxide precursor or the second metal alkoxideprecursor is thermally decomposed to produce the first or second metaloxide layer while in the absence of a co-reactant.

While the foregoing is directed to embodiments of the disclosure, otherand further embodiments may be devised without departing from the basicscope thereof, and the scope thereof is determined by the claims thatfollow. All documents described herein are incorporated by referenceherein, including any priority documents and/or testing procedures tothe extent they are not inconsistent with this text. As is apparent fromthe foregoing general description and the specific embodiments, whileforms of the present disclosure have been illustrated and described,various modifications can be made without departing from the spirit andscope of the present disclosure. Accordingly, it is not intended thatthe present disclosure be limited thereby. Likewise, the term“comprising” is considered synonymous with the term “including” forpurposes of United States law. Likewise whenever a composition, anelement or a group of elements is preceded with the transitional phrase“comprising”, it is understood that we also contemplate the samecomposition or group of elements with transitional phrases “consistingessentially of,” “consisting of”, “selected from the group of consistingof,” or “is” preceding the recitation of the composition, element, orelements and vice versa.

Certain embodiments and features have been described using a set ofnumerical upper limits and a set of numerical lower limits. It should beappreciated that ranges including the combination of any two values,e.g., the combination of any lower value with any upper value, thecombination of any two lower values, and/or the combination of any twoupper values are contemplated unless otherwise indicated. Certain lowerlimits, upper limits and ranges appear in one or more claims below.

1. A method of forming a metal oxide material, comprising: positioning asubstrate within a processing chamber, wherein the substrate comprises apassivated surface and a non-passivated surface; exposing the substrateto a first metal alkoxide precursor to produce a first metal oxide layeron or over the non-passivated surface while the passivated surfaceremains at least substantially free of the first metal oxide layer,wherein the first metal alkoxide precursor is thermally decomposed toproduce the first metal oxide layer; exposing the substrate to a secondmetal alkoxide precursor to produce a second metal oxide layer on thefirst metal oxide layer while the passivated surface remains at leastsubstantially free of the second metal oxide layer, wherein the secondmetal alkoxide precursor is thermally decomposed to produce the secondmetal oxide layer; and sequentially repeating exposing the substrate tothe first metal alkoxide precursor and the second metal alkoxideprecursor to produce a laminate film comprising alternating layers ofthe first and second metal oxide layers, wherein the first metalalkoxide precursor and the second metal alkoxide precursor independentlycomprises a metal selected from the group consisting of titanium,zirconium, hafnium, aluminum, and lanthanum, and wherein the first metalalkoxide precursor and the second metal alkoxide precursor havedifferent metals.
 2. The method of claim 1, wherein the laminate film isamorphous.
 3. The method of claim 1, wherein the substrate is maintainedat a temperature of about 150° C. to about 450° C. when producing thefirst metal oxide layer and/or the second metal oxide layer.
 4. Themethod of claim 1, wherein each of the first metal oxide layer and thesecond metal oxide layer independently has a thickness of about 0.1 nmto about 5 nm.
 5. The method of claim 1, wherein the laminate filmcomprises about 10 pairs to about 50 pairs of the first and second metaloxide layers.
 6. The method of claim 1, wherein the laminate film has athickness of about 5 nm to about 50 nm.
 7. The method of claim 1,wherein the first metal oxide layer is produced during a firstpulsed-chemical vapor deposition process, wherein the substrate issequentially exposed to the first metal alkoxide precursor and a firstpurge gas during the first pulsed-chemical vapor deposition process, andwherein the substrate is exposed to the first metal alkoxide precursorfor a period of about 0.1 seconds to about 10 seconds and exposed to thefirst purge gas for a period of about 1 second to about 120 seconds. 8.The method of claim 1, wherein the second metal oxide layer is producedduring a second pulsed-chemical vapor deposition process, wherein thesubstrate is sequentially exposed to the second metal alkoxide precursorand a second purge gas during the second pulsed-chemical vapordeposition process, and wherein the substrate is exposed to the secondmetal alkoxide precursor for a period of about 0.1 seconds to about 10seconds and exposed to the second purge gas for a period of about 1second to about 120 seconds.
 9. The method of claim 1, wherein the firstmetal alkoxide precursor and the second metal alkoxide precursorindependently comprises a metal propoxide compound or a metal butoxidecompound.
 10. The method of claim 1, wherein the first metal alkoxideprecursor and the second metal alkoxide precursor independentlycomprises titanium (IV) n-propoxide, titanium (IV) iso-propoxide,titanium (IV) n-butoxide, titanium (IV) tert-butoxide, hafnium (IV)n-propoxide, hafnium (IV) iso-propoxide, hafnium (IV) n-butoxide,hafnium (IV) tert-butoxide, zirconium (IV) n-propoxide, zirconium (IV)iso-propoxide, zirconium (IV) n-butoxide, zirconium (IV) tert-butoxide,aluminum (III) n-propoxide, aluminum (III) iso-propoxide, aluminum (III)n-butoxide, aluminum (III) tert-butoxide, lanthanum (III) n-propoxide,lanthanum (III) iso-propoxide, lanthanum (III) n-butoxide, lanthanum(III) tert-butoxide, isomers thereof, or any combination thereof. 11.The method of claim 1, wherein the first metal oxide layer comprisestitanium oxide and the second metal oxide layer comprises hafnium oxide.12. The method of claim 1, wherein the first metal oxide layer comprisesa first metal and the second metal oxide layer comprises a second metal,and wherein the laminate film has an atomic ratio of the first metal tothe second metal of about 5:1 to about 15:1.
 13. The method of claim 1,wherein the non-passivated surface is terminated with hydride groups,hydroxide groups, or a combination thereof, and wherein the passivatedsurface is terminated with one or more alkyl groups.
 14. The method ofclaim 1, wherein at least the first metal alkoxide precursor or thesecond metal alkoxide precursor is thermally decomposed by β-hydrideelimination process.
 15. The method of claim 1, wherein at least thefirst metal alkoxide precursor or the second metal alkoxide precursor isthermally decomposed while in the absence of a co-reactant.
 16. A methodof forming a metal oxide material, comprising: positioning a substratewithin a processing chamber, wherein the substrate comprises apassivated surface and a non-passivated surface; and depositing alaminate film selectively on the non-passivated surface while thepassivated surface remains at least substantially free of the laminatefilm, wherein: the laminate film comprises two or more pairs ofalternating layers of a first metal oxide layer and a second metal oxidelayer, a first metal alkoxide precursor is thermally decomposed toproduce the first metal oxide layer during a first pulsed-chemical vapordeposition process, a second metal alkoxide precursor is thermallydecomposed to produce the second metal oxide layer during a secondpulsed-chemical vapor deposition process, the first metal alkoxideprecursor and the second metal alkoxide precursor independentlycomprises a metal selected from the group consisting of titanium,zirconium, hafnium, aluminum, and lanthanum, and the first metalalkoxide precursor and the second metal alkoxide precursor havedifferent metals.
 17. The method of claim 16, wherein the substrate ismaintained at a first temperature during the first pulsed-chemical vapordeposition process and at a second temperature during the secondpulsed-chemical vapor deposition process, and wherein each of the firsttemperature and the second temperature is independently at about 150° C.to about 450° C.
 18. The method of claim 17, wherein each of the firsttemperature and the second temperature is independently at about 200° C.to about 350° C.
 19. The method of claim 16, wherein each of the firstmetal oxide layer and the second metal oxide layer independently has athickness of about 0.1 nm to about 5 nm, and wherein the laminate filmcomprises about 10 pairs to about 50 pairs of the first and second metaloxide layers.
 20. A method of forming a metal oxide material,comprising: positioning a substrate within a processing chamber, whereinthe substrate comprises a passivated surface and a non-passivatedsurface; exposing the substrate to a first metal alkoxide precursor toproduce a first metal oxide layer on or over the non-passivated surfacewhile the passivated surface remains at least substantially free of thefirst metal oxide layer, wherein the first metal alkoxide precursor isthermally decomposed to produce the first metal oxide layer while thesubstrate is maintained at a first temperature of about 150° C. to about350° C.; exposing the substrate to a second metal alkoxide precursor toproduce a second metal oxide layer on the first metal oxide layer whilethe passivated surface remains at least substantially free of the secondmetal oxide layer, wherein the second metal alkoxide precursor isthermally decomposed to produce the second metal oxide layer while thesubstrate is maintained at a second temperature of about 150° C. toabout 350° C.; and sequentially repeating exposing the substrate to thefirst metal alkoxide precursor and the second metal alkoxide precursorto produce a laminate film comprising alternating layers of the firstand second metal oxide layers, wherein the laminate film is amorphous,and wherein the laminate film comprises about 10 pairs to about 100pairs of the first and second metal oxide layers, wherein the firstmetal oxide layer and the second metal oxide layer independentlycomprises a metal oxide selected from the group consisting of titaniumoxide, zirconium oxide, hafnium oxide, aluminum oxide, lanthanum oxide,and dopants thereof, and wherein the first metal oxide layer and thesecond metal oxide layer contain different metal oxides.